Update to 6.92

Upstream changes:
6.92  2023-06-07
  -  Time zone fixes
         Newest zoneinfo data (tzdata 2023c).

  -  Documentation fixes
         Typo fix. Reported by Derek Terveer

6.91  2023-03-01
  -  Fixed bug where timezone alias wasn't handled
         On linux systems configured to be in a timezone that is an alias,
         the system timezone wasn't recognized, and it defaulted to GMT.
         This is now fixed. Patch supplied by Sandi Wallendahl (GitHub #43)

6.90  2022-12-02
  -  Time zone fixes
         Aliases in the tzdata database were not being added to the timezone
         data. Reported in GitHub issue #40.

         The UTC timezone is now named Etc/UTC instead of UTC to be in line
         with the aliases.

         Newest zoneinfo data (tzdata 2022g).

  -  Language fixes
         Additions to the Polish translation. GitHub issue #41.

         Additions to several languages. GitHub issue #42.

         Added some support for per-language parsing rules to respond to
         GitHub issue #42.

  -  Documentation fixes
         The version numbers in the change log was messed up due to a
         skipped release (no new timezone fixes that time). Fixed.

6.89  2022-09-01
  -  (!) Date::Manip 5.xx interface to be removed
         The old version of Date::Manip (version 5.xx) has been distributed
         as part of the package in order to support versions of perl older
         than 5.10 . I see no valid reason to continue to support that, so
         as of version 7.00, Date::Manip will only include the newer
         interfaces (which require perl 5.10 or newer). There are no plans
         to deprecate the functional interface.

  -  Time zone fixes
         Newest zoneinfo data (tzdata 2022c).


(wen)